Can I get a confirmation on my answer or explanation on how to do it if I'm wrong? I can't determine the alternative hypothesis either. I'm Stuck on my homework. Thank you for any help.

Employees in a large company are entitled to 15-minute coffee breaks. A random sample of the duration of coffee breaks for 10 employees was taken with the times shown below. Assuming that the times are normally distributed, is there enough evidence at the 1% significance level to indicate that on average employees are taking longer coffee breaks than they are entitled to? Data Collected n X 14 N 16 15 18 20 17 18 16 18 10 16 The calculated test statistic = ? (four decimal places) 3.250